53 citations · 167 across the 11 of their papers we have counts for
11 papers
On the flow unsteadiness and operational characteristics of a novel supersonic fluidic oscillator
Spandan Maikap, S. K. Karthick, R. Arun Kumar
A novel supersonic jet oscillating method is investigated both experimentally and numerically. A rectangular primary supersonic jet is issued into a confined chamber with sudden en…
Unsteadiness in hypersonic leading-edge separation
S. K. Karthick, Soumya R. Nanda, J. Cohen
Hypersonic leading-edge separation is studied towards understanding the varying shock-related unsteadiness with freestream Reynolds number ($1.66 \times 10^5 \leq Re_D \leq 5.85 \t…
Unsteady dynamics in a subsonic duct flow with a bluff body
Luckachan. K. George, S. K. Karthick, A. R. Srikrishnan +1
A series of reduced-order numerical simulations on a specific bluff body type (v-gutters) in a subsonic duct flow is done to assess the unsteady wake dynamics. Two of the v-gutter'…
Unsteady pulsating flowfield over spiked axisymmetric forebody at hypersonic flows
S. Mohammed Ibrahim, R. Sriram, S. K. Karthick +1
The paper gives experimental observations on the hypersonic flow past an axisymmetric flat-face cylinder with a protruding sharp-tip spike at a freestream Mach number of $M_\infty…
A review of diaphragmless shock tubes for interdisciplinary applications
S. Janardhanraj, S. K. Karthick, A. Farooq
Shock tubes have emerged as an effective tool for applications in various fields of research and technology. The conventional mode of shock tube operation employs a frangible diaph…
Shock and shear layer interaction in a confined supersonic cavity flow
S. K. Karthick
The impinging shock of varying strengths on the free shear layer in a confined supersonic cavity flow is studied numerically using the detached-eddy simulation. The resulting spati…
On the unsteady dynamics of partially shrouded compressible jets
Soumya R. Nanda, S. K. Karthick, T. V. Krishna +2
We experimentally investigate a partially shrouded sonic jet (a sonic free-jet shielded by a solid wall-extension on one side) exiting from a planar nozzle at two different nozzle…
On the unsteady throttling dynamics and scaling analysis in a typical hypersonic inlet-isolator flow
K. Raja Sekar, S. K. Karthick, S. Jegadheeswaran +1
The flow field in a two-dimensional three-ramp hypersonic mixed-compression inlet in a freestream Mach number of is numerically solved to understand the unsteady throt…
On the fluidic behavior of an over-expanded planar plug nozzle under lateral confinement
M. Chaudhary, T. V. Krishna, Sowmya R. Nanda +4
The present work aims to study the fluidic behavior on lateral confinement by placing side-walls on the planar plug nozzle through experiments. The study involves two cases of nozz…
Elliptic supersonic jet morphology manipulation using sharp-tipped lobes
Srisha M. V. Rao, S. K. Karthick, Abhinav Anand
Elliptic nozzle geometry is attractive for mixing enhancement of supersonic jets. However, jet dynamics, such as flapping, gives rise to high-intensity tonal sound. We experimental…
Parametric experimental studies on the shock related unsteadiness in a hemispherical spiked body at supersonic flow
Devabrata Sahoo, S. K. Karthick, Sudip Das +1
Experimental studies are carried out to investigate the effects of the geometrical parameters with a drag reducing spike on a hemispherical forebody in a supersonic freestream of $…